Unfortunately it is not possible to wrap text in grid cells simply by using white-space: normal rule. This is because grid row needs white-space: nowrap and this setting is applied to all child elements as well (IE bug).
However you can get multiline text if you insert <br /> elements in your text:
var myData = [
["MSFT","Microsoft <br/> Corporation", "314,571.156"],
["ORCL", "Oracle <br/> Corporation", "62,615.266"],
["SAP", "SAP <br/> AG <br/> (ADR)", "40,986.328"]
];